In a 397-223 vote, British MPs have voted to extend airstrikes against Islamic State into Syria. Shadow Foreign Secretary Hilary Benn spoke passionately in support of the move, defying Labour leader Jeremy Corbyn and backing the plan of PM David Cameron.

After a tumultuous day of impassioned debate, the motion to extend airstrikes against Islamic State (IS, formerly ISIS/ISIL). Some 67 Labour MPs voted in favor of the strikes, swinging the vote in the government’s favor.

Hours after the vote, RAF jets carried out their first airstrikes on Syrian territory, a Ministry of Defence spokesman said early Thursday. He refused to give details of the specific sites targeted.

Earlier in the evening, Foreign Secretary Philip Hammond said raids could begin “very quickly” because jets are already stationed in the Middle East where they are carrying out attacks in Iraq.

Among the standout speeches in the course of the mammoth 10 hour debate was Shadow Foreign Secretary Hilary Benn’s closing remarks, which called on MPs to act following the atrocities in Paris last month.

The “carnage” in Paris “brought home the present danger” to the UK and fostered the need to act against the extremists, he said, because it could have been and “could still be” a British city.

Benn added it is Britain’s “moral and practical” duty to extend airstrikes into Syria.

The result will be welcomed by Prime Minister David Cameron, who previously pledged to only hold a vote once he was guaranteed the support of parliament.

However, Labour leader Jeremy Corbyn has suffered an embarrassing defeat, with 67 of his own MPs voting against him. He was forced by a rebellious shadow cabinet to allow his party to hold a free vote.

British service men and women will now be in harm’s way and the loss of innocent lives is sadly almost inevitable pic.twitter.com/z338VAmIai

Still, the majority of Labour MPs – 153 – and 16 members of the Shadow Cabinet supported Corbyn in his case against launching Britain’s new overseas bombing campaign. Fifty-three MPs from the Scottish National Party (SNP) also cast “No” votes, along with three Social Democratic and Labour Party MPs. Others opposing the motion were two Liberal Democrats, two Plaid Cymru MPs, and one Green MP.

Earlier on Wednesday a spokesperson for the Corbyn camp said they expected to lose the vote, but claimed the government had “lost the argument.”

Foreign Secretary Philip Hammond said airstrikes would ultimately pave the way for a battle on the ground, which he said is the only way to defeat IS.

“Airstrikes alone will not finish ISIL,” he said “but they will over time degrade ISIL and force a change in its behavior.”

UK will be safer following tonight's decision by @UKParliament to take military action in #Syria alongside political/humanitarian efforts

The vote on Wednesday evening was met with anti-war protests throughout the UK, with demonstrators in London staging a “die-in” outside the Houses of Parliament that blocked roads and brought traffic to a standstill.